Ichihiko Takahashi

Professional Edition NMRI FATRUN/SPECTRUN offers the best support for fatigue analyses in both time and frequency domains. ■Stress range count (FATRUN) Various cycle counting methods, including 1-D and 2-D Rainflow counting ■Mean stress correction (FATRUN) Mean stress correction by 2-D Rainflow counting and modified Goodman's diagram or Gerber's one ■Fatigue analysis (FATRUN/SPECTRUN) Based on arbitrary S-N curve and the linear cumulative damage law (Miner's law) ■Frequency domain fatigue analysis (SPECTRUN) Including damage correction for wide-banded stress spectra ■Stress wave sumulation (SPECTRUN) Generates stress time history (in FATRUN format) corresponding to arbitrary stress spectrum

NMRI MooRUN offers the best support for fatigue analyses on various kinds of mooring systems. ■Mooring component type Common and connecting links, wire ropes, and synthetic fiber ropes included ■Tension cycle counting Various cycle counting methods, including 1-D and 2-D Rainflow counting ■Mean tension correction Mean tension correction by 2-D Rainflow counting and modified Goodman's diagram or Gerber's one ■Fatigue analysis Based on arbitrary T-N curve and the linear cumulative damage rule (Miner's rule)

Professional Edition NMRI LAYCAL offers the best support for analyses of stiffness, stress and fatigue in various multilayered pipe structures. ■Multilayered structure Helical and tubular layers ■Stiffness Analysis Bending, axial, and torsional stiffness ■Stress Analysis Stresses under arbitrary tension, bending moment, and internal/external pressure Non-linear Stick-Slip bending analysis included ■Fatigue Analysis Based on arbitrary S-N curves and mean stress corrections